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110 2nd Avenue South #D7 Pacheco CA 94553-5550 <br /> McCampbell Analytical IncTelephone 925-795-1620 Fax 925 798-1622 <br /> http/,www <br /> mccampbell com E-mail main@mccampbell cam <br /> . Advanced GcoEnvironmental,Inc Client Project ID Manteca City Corp Date Sampled 07/18/02 <br /> 837 Shaw Road Yard Date Received 07/19/02 <br />' <br /> Client Contact Brian Millman Date Extracted 07122/02-07126102 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 07/22102-07126102 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> Extraction method SW5030B Analytical methods SW8015Cm Work Order 0207254 <br />' Lab ID Client ID Matrix TPH(g) DF %SS <br /> 001A MWl/07-18-02 W ND 1 106 <br />' 002A MW2/07-18-02 W ND 1 997 <br /> 003A MW3/07-18-02 W ND 1 979 <br />' 004A MW4/07-18-02 W ND<100j 1 101 <br /> 005A MW5/07-18-02 W NIX100j l 101 <br />' 006A MW6/07-18-02 W ND 1 991 <br /> 007A MW7/07-18-02 W ND 1 989 <br /> i <br /> i <br /> Reporting Limit for DF—1, W 50 gg/L <br /> i ND means not detected at or S NA NA <br /> above the reporting limit <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts to ug/L <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a) <br /> unmodtfied or weakly modified gasoline is significant,b)heavier gasoline range compounds are significant(aged gasoline7),c)lighter gasoline range <br />' compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline? e)TPH pattern that does not appear to he derived from gasoline(stoddard solvent),t)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,1)liquid sample that <br /> contains greater than—2 vol %sediment,l)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be derived from <br />' gasoline(aviation gas) m)no recognizable pattern <br /> • DHS Certification No 1644 Edward Harrulton,Lab Director <br /> 1 <br /> 1 <br />